Abstract:
The roots of Acacia nilotica subspecies tomentoza were screened for major secondary metabolites. Phytochemical screening revealed the presence of flavonoids , tannins, steroids and alkaloids.
From the roots a flavonoid-compound I- was isolated by TLC in a chromatographically pure form. The structure of this flavonoid was elucidated by a combination of spectral tools (UV, 1HNMR and MS).It was assigned the following tentative structure:
I
Furthemore, the total extract, chloroform ethyl acetate and n-butanol fractions of roots were evaluated for their antimicrobial activity and excellent results were obtained for some fractions.
The oils from two key species in Sudanese ethnomedicine-Cassia fistula and Eucalyptus camaldulensis were analyzed by GC-MS. The analysis showed 29 components for Eucalyptus camaldulensis and 25 components for Cassia fistula. The oils were assessed for antimicrobial activity and promising results were obtained.
